Tungsten Fiber Reinforced Copper Matrix Composites A Review
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Tungsten Fiber Reinforced Copper Matrix Composites A Review
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-10-18
Tungsten Fiber Reinforced Copper Matrix Composites A Review written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-18 with Science categories.
Tungsten fiber reinforced copper matrix (W/Cu) composites have served as an ideal model system with which to analyze the properties of metal matrix composites. A series of research programs were conducted to investigate the stress-strain behavior of W/Cu composites; the effect of fiber content on the strength, modulus, and conductivity of W/Cu composites; and the effect of alloying elements on the behavior of tungsten wire and of W/Cu composites. Later programs investigated the stress-rupture, creep, and impact behavior of these composites at elevated temperatures. Analysis of the results of these programs as allows prediction of the effects of fiber properties, matrix properties, and fiber content on the properties of W/Cu composites. These analyses form the basis for the rule-of-mixtures prediction of composite properties which was universally adopted as the criteria for measuring composite efficiency. In addition, the analyses allows extrapolation of potential properties of other metal matrix composites and are used to select candidate fibers and matrices for development of tungsten fiber reinforced superalloy composite materials for high temperature aircraft and rocket engine turbine applications. The W/Cu composite efforts are summarized, some of the results obtained are described, and an update is provided on more recent work using W/Cu composites as high strength, high thermal conductivity composite materials for high heat flux, elevated temperature applications. Mcdanels, David L. Glenn Research Center RTOP 586-01-11
Tungsten Fiber Reinforced Copper Matrix Composites
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Author : David L. McDanels
language : en
Publisher:
Release Date : 1989
Tungsten Fiber Reinforced Copper Matrix Composites written by David L. McDanels and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Composite materials categories.
Stress Strain Behavior Of Tungsten Fiber Reinforced Copper Composites
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Author : David L. McDanels
language : en
Publisher:
Release Date : 1963
Stress Strain Behavior Of Tungsten Fiber Reinforced Copper Composites written by David L. McDanels and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Copper categories.
Investigation Of The Production And Product Analysis Of Tungsten Fiber Reinforced Copper Silver Alloy Matrix Composites Formed By Liquid Phase Sintering
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Author : William D. Goins
language : en
Publisher:
Release Date : 1969
Investigation Of The Production And Product Analysis Of Tungsten Fiber Reinforced Copper Silver Alloy Matrix Composites Formed By Liquid Phase Sintering written by William D. Goins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with categories.
The purpose of this investigation was to study the feasibility of producing fiber reinforced composites by vibratory compaction and liquid phase sintering. Tensile data for continuous fiber reinforced composites fabricated by this technique was in very good agreement with the rule-of- mixing. (Author, modified-PL).
Elevated Temperature Tensile Properties Of Alloyed Tungsten Fiber Composites
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Author : Donald W. Petrasek
language : en
Publisher:
Release Date : 1965
Elevated Temperature Tensile Properties Of Alloyed Tungsten Fiber Composites written by Donald W. Petrasek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Metals categories.
The effects of selected alloying elements on the elevated temperature tensile properties of tungsten fiber reinforced composites were studied. Composites were made of copper, copper- 2 percent chromium and copper- 10 percent nickel reinforced with various volume percents of uniaxially oriented tungsten fibers. The composites were tested in tension at temperatures up to 1800 degrees F.A comparison of the elevated-temperature tensile properties of tungsten fiber - copper alloy composites, representing soluble systems, was made with tungsten fiber - copper composites, representing a mutually insoluble system. The effects of alloying on the elevated-temperature tensile properties of tungsten fiber reinforced composites was also studied. A linear relation existed at elevated temperatures between tensile strength and volume percent fiber content for all the systems investigated. The copper alloy composites were weaker in tension at high volume percent fiber contents than copper composites in which alloying with the fiber did not occur. The tensile strength of the alloyed tungsten fiber decreased with increasing penetration of the alloying element into the tungsten fiber.
Critical Aspect Ratio For Tungsten Fibers In Copper Nickel Matrix Composites
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Author : Robert W. Jech
language : en
Publisher:
Release Date : 1975
Critical Aspect Ratio For Tungsten Fibers In Copper Nickel Matrix Composites written by Robert W. Jech and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Copper-nickel alloys categories.
Stress-rupture and tensile tests were conducted at 816 deg C (1500 deg F) to determine the effect of matrix composition on the minimum fiber length to diameter ratio (critical aspect ratio) below which fibers in a tungsten fiber/copper-nickel alloy matrix composite could not be stressed to their ultimate load carrying capability. This study was Intended to simulate some of the conditions that might be encountered with materials combinations used in high-temperature composites. The critical aspect ratio for stress-rupture was found to be greater than for short-time tension, and it increased as the time to rupture increased. The Increase was relatively slight, and calculated fiber lengths for long service appear to be well within practical size limits for effective reinforcement and ease of fabrication of potential gas turbine components.
Metallurgical And Geometrical Factors Affecting Elevated Temperature Tensile Properties Of Discontinuous Tungsten Fiber Reinforced Composites
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Author : D. W. Petrasek
language : en
Publisher:
Release Date : 1967
Metallurgical And Geometrical Factors Affecting Elevated Temperature Tensile Properties Of Discontinuous Tungsten Fiber Reinforced Composites written by D. W. Petrasek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Composite metallurgy categories.
The length to diameter ratio and orientation of the fibers in discontinuous fiber reinforced composites was correlated to their elevated temperature tensile properties. Composites were made of copper and copper - 2 per cent chromium alloy reinforced with tungsten fibers having various length to diameter ratios. The composites were tested in tension at 300, 900, and 1500 F. These results were then compared with continuous length fiber reinforced composites containing the same matrix materials and fiber contents. The fiber orientation in the composite was found to be extremely critical at elevated temperatures. Shear failures occurred for specimens tested at 1500 F in which the fibers were misaligned from the tensile axis by as small as 3 deg. Composites which failed in shear had significantly lower tensile strengths than did composites having fibers aligned parallel to the tensile axis of the specimen. Tensile strengths of discontinuous fiber reinforced composites in which the fibers were aligned parallel to the tensile axis were dependent upon the length to diameter ratio of the fibers in the composite. As the length to diameter ratio of the reinforcing fibers decreased, the tensile strengths of the composites decreased. Alloying the copper matrix with chromium increased the matrix shear strength which was beneficial even though the alloying element reacted with the fiber. Load transfer from the matrix to the fiber was dependent upon the shear strength of the matrix. The greater the shear strength, the higher the load transfer capabilities of the matrix. The tensile strength of copper - 2 per cent chromium matrix composites thus was higher than unalloyed copper matrix composites having the same fiber content and the same length to diameter ratio fibers.
Nasa Technical Paper
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Author :
language : en
Publisher:
Release Date : 1989
Nasa Technical Paper written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Science categories.
Analysis Of Stress Rupture And Creep Properties Of Tungsten Fiber Reinforced Copper Composites
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Author : David L. McDanels
language : en
Publisher:
Release Date : 1967
Analysis Of Stress Rupture And Creep Properties Of Tungsten Fiber Reinforced Copper Composites written by David L. McDanels and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Superconducting composites categories.
Stress Strain Behavior Of Tungsten Fiber Reinforced Copper Composites
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Author : David L. McDanels
language : en
Publisher:
Release Date : 1963
Stress Strain Behavior Of Tungsten Fiber Reinforced Copper Composites written by David L. McDanels and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Copper categories.